- OMEGA USB Adapator User Guide

Technical
OMG-USB-232-4 Page 5
Technical Description
The OMG-USB-232-4 utilizes four USB UARTs. These chips feature
programmable baud rate, data format, 128 byte Dual Port TX Buffer, and 384 byte
Dual Port RX Buffer. The RS-232 transceiver supports data rates up to 460.8K
baud.
Features
• Hot pluggable device that does not require opening the case
• No system resources are required (i.e. I/O ports or IRQ’s)
• LED status indicators for USB Enabled and port activity
RS-232 (DB-9 Male)
Signal Name Pin # Mode
GND Ground 5
TX Transmit Data 3 Output
RTS Request To Send 7 Output
DTR Data Terminal Ready 4 Output
RX Receive Data 2 Input
CTS Clear To Send 8 Input
DSR Data Set Ready 6 Input
DCD Data Carrier Detect 1 Input
RI Ring Indicator 9 Input